Upgrade your gold and silver assay process with our #8A fire assay cupels. With the cupellation process, our magnesium oxide cups remove impurities and oxidize base metals for precise precious metal analysis. Each pack includes 6 cups for optimal gold and silver refinement.
Each cupel removes impurities through precise oxidation, producing a pure gold or silver button or bead. Assay your metals with confidence and maximize your profits with these professional-grade cupels.
